2 * AMD 755/756/766/8111 and nVidia nForce/2/2s/3/3s/CK804/MCP04
3 * IDE driver for Linux.
5 * Copyright (c) 2000-2002 Vojtech Pavlik
6 * Copyright (c) 2007 Bartlomiej Zolnierkiewicz
8 * Based on the work of:
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License version 2 as published by
15 * the Free Software Foundation.
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/pci.h>
21 #include <linux/init.h>
22 #include <linux/ide.h>
25 AMD_IDE_CONFIG = 0x41,
26 AMD_CABLE_DETECT = 0x42,
27 AMD_DRIVE_TIMING = 0x48,
28 AMD_8BIT_TIMING = 0x4e,
29 AMD_ADDRESS_SETUP = 0x4c,
30 AMD_UDMA_TIMING = 0x50,
33 static unsigned int amd_80w;
34 static unsigned int amd_clock;
36 static char *amd_dma[] = { "16", "25", "33", "44", "66", "100", "133" };
37 static unsigned char amd_cyc2udma[] = { 6, 6, 5, 4, 0, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 7 };
39 static inline u8 amd_offset(struct pci_dev *dev)
41 return (dev->vendor == PCI_VENDOR_ID_NVIDIA) ? 0x10 : 0;
45 * amd_set_speed() writes timing values to the chipset registers
48 static void amd_set_speed(struct pci_dev *dev, u8 dn, u8 udma_mask,
49 struct ide_timing *timing)
51 u8 t = 0, offset = amd_offset(dev);
53 pci_read_config_byte(dev, AMD_ADDRESS_SETUP + offset, &t);
54 t = (t & ~(3 << ((3 - dn) << 1))) | ((clamp_val(timing->setup, 1, 4) - 1) << ((3 - dn) << 1));
55 pci_write_config_byte(dev, AMD_ADDRESS_SETUP + offset, t);
57 pci_write_config_byte(dev, AMD_8BIT_TIMING + offset + (1 - (dn >> 1)),
58 ((clamp_val(timing->act8b, 1, 16) - 1) << 4) | (clamp_val(timing->rec8b, 1, 16) - 1));
60 pci_write_config_byte(dev, AMD_DRIVE_TIMING + offset + (3 - dn),
61 ((clamp_val(timing->active, 1, 16) - 1) << 4) | (clamp_val(timing->recover, 1, 16) - 1));
64 case ATA_UDMA2: t = timing->udma ? (0xc0 | (clamp_val(timing->udma, 2, 5) - 2)) : 0x03; break;
65 case ATA_UDMA4: t = timing->udma ? (0xc0 | amd_cyc2udma[clamp_val(timing->udma, 2, 10)]) : 0x03; break;
66 case ATA_UDMA5: t = timing->udma ? (0xc0 | amd_cyc2udma[clamp_val(timing->udma, 1, 10)]) : 0x03; break;
67 case ATA_UDMA6: t = timing->udma ? (0xc0 | amd_cyc2udma[clamp_val(timing->udma, 1, 15)]) : 0x03; break;
71 pci_write_config_byte(dev, AMD_UDMA_TIMING + offset + (3 - dn), t);
75 * amd_set_drive() computes timing values and configures the chipset
76 * to a desired transfer mode. It also can be called by upper layers.
79 static void amd_set_drive(ide_drive_t *drive, const u8 speed)
81 ide_hwif_t *hwif = drive->hwif;
82 struct pci_dev *dev = to_pci_dev(hwif->dev);
83 ide_drive_t *peer = hwif->drives + (~drive->dn & 1);
84 struct ide_timing t, p;
86 u8 udma_mask = hwif->ultra_mask;
88 T = 1000000000 / amd_clock;
89 UT = (udma_mask == ATA_UDMA2) ? T : (T / 2);
91 ide_timing_compute(drive, speed, &t, T, UT);
94 ide_timing_compute(peer, peer->current_speed, &p, T, UT);
95 ide_timing_merge(&p, &t, &t, IDE_TIMING_8BIT);
98 if (speed == XFER_UDMA_5 && amd_clock <= 33333) t.udma = 1;
99 if (speed == XFER_UDMA_6 && amd_clock <= 33333) t.udma = 15;
101 amd_set_speed(dev, drive->dn, udma_mask, &t);
105 * amd_set_pio_mode() is a callback from upper layers for PIO-only tuning.
108 static void amd_set_pio_mode(ide_drive_t *drive, const u8 pio)
110 amd_set_drive(drive, XFER_PIO_0 + pio);
113 static void __devinit amd7409_cable_detect(struct pci_dev *dev,
116 /* no host side cable detection */
120 static void __devinit amd7411_cable_detect(struct pci_dev *dev,
125 u8 t = 0, offset = amd_offset(dev);
127 pci_read_config_byte(dev, AMD_CABLE_DETECT + offset, &t);
128 pci_read_config_dword(dev, AMD_UDMA_TIMING + offset, &u);
129 amd_80w = ((t & 0x3) ? 1 : 0) | ((t & 0xc) ? 2 : 0);
130 for (i = 24; i >= 0; i -= 8)
131 if (((u >> i) & 4) && !(amd_80w & (1 << (1 - (i >> 4))))) {
132 printk(KERN_WARNING "%s: BIOS didn't set cable bits "
133 "correctly. Enabling workaround.\n",
135 amd_80w |= (1 << (1 - (i >> 4)));
140 * The initialization callback. Initialize drive independent registers.
143 static unsigned int __devinit init_chipset_amd74xx(struct pci_dev *dev,
146 u8 t = 0, offset = amd_offset(dev);
149 * Check 80-wire cable presence.
152 if (dev->vendor == PCI_VENDOR_ID_AMD &&
153 dev->device == PCI_DEVICE_ID_AMD_COBRA_7401)
155 else if (dev->vendor == PCI_VENDOR_ID_AMD &&
156 dev->device == PCI_DEVICE_ID_AMD_VIPER_7409)
157 amd7409_cable_detect(dev, name);
159 amd7411_cable_detect(dev, name);
162 * Take care of prefetch & postwrite.
165 pci_read_config_byte(dev, AMD_IDE_CONFIG + offset, &t);
167 * Check for broken FIFO support.
169 if (dev->vendor == PCI_VENDOR_ID_AMD &&
170 dev->vendor == PCI_DEVICE_ID_AMD_VIPER_7411)
174 pci_write_config_byte(dev, AMD_IDE_CONFIG + offset, t);
177 * Determine the system bus clock.
180 amd_clock = (ide_pci_clk ? ide_pci_clk : 33) * 1000;
183 case 33000: amd_clock = 33333; break;
184 case 37000: amd_clock = 37500; break;
185 case 41000: amd_clock = 41666; break;
188 if (amd_clock < 20000 || amd_clock > 50000) {
189 printk(KERN_WARNING "%s: User given PCI clock speed impossible (%d), using 33 MHz instead.\n",
197 static u8 __devinit amd_cable_detect(ide_hwif_t *hwif)
199 if ((amd_80w >> hwif->channel) & 1)
200 return ATA_CBL_PATA80;
202 return ATA_CBL_PATA40;
205 static void __devinit init_hwif_amd74xx(ide_hwif_t *hwif)
207 struct pci_dev *dev = to_pci_dev(hwif->dev);
209 if (hwif->irq == 0) /* 0 is bogus but will do for now */
210 hwif->irq = pci_get_legacy_ide_irq(dev, hwif->channel);
213 static const struct ide_port_ops amd_port_ops = {
214 .set_pio_mode = amd_set_pio_mode,
215 .set_dma_mode = amd_set_drive,
216 .cable_detect = amd_cable_detect,
219 #define IDE_HFLAGS_AMD \
220 (IDE_HFLAG_PIO_NO_BLACKLIST | \
221 IDE_HFLAG_ABUSE_SET_DMA_MODE | \
222 IDE_HFLAG_POST_SET_MODE | \
223 IDE_HFLAG_IO_32BIT | \
224 IDE_HFLAG_UNMASK_IRQS)
226 #define DECLARE_AMD_DEV(name_str, swdma, udma) \
229 .init_chipset = init_chipset_amd74xx, \
230 .init_hwif = init_hwif_amd74xx, \
231 .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}}, \
232 .port_ops = &amd_port_ops, \
233 .host_flags = IDE_HFLAGS_AMD, \
234 .pio_mask = ATA_PIO5, \
235 .swdma_mask = swdma, \
236 .mwdma_mask = ATA_MWDMA2, \
240 #define DECLARE_NV_DEV(name_str, udma) \
243 .init_chipset = init_chipset_amd74xx, \
244 .init_hwif = init_hwif_amd74xx, \
245 .enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}}, \
246 .port_ops = &amd_port_ops, \
247 .host_flags = IDE_HFLAGS_AMD, \
248 .pio_mask = ATA_PIO5, \
249 .swdma_mask = ATA_SWDMA2, \
250 .mwdma_mask = ATA_MWDMA2, \
254 static const struct ide_port_info amd74xx_chipsets[] __devinitdata = {
255 /* 0 */ DECLARE_AMD_DEV("AMD7401", 0x00, ATA_UDMA2),
256 /* 1 */ DECLARE_AMD_DEV("AMD7409", ATA_SWDMA2, ATA_UDMA4),
257 /* 2 */ DECLARE_AMD_DEV("AMD7411", ATA_SWDMA2, ATA_UDMA5),
258 /* 3 */ DECLARE_AMD_DEV("AMD7441", ATA_SWDMA2, ATA_UDMA5),
259 /* 4 */ DECLARE_AMD_DEV("AMD8111", ATA_SWDMA2, ATA_UDMA6),
261 /* 5 */ DECLARE_NV_DEV("NFORCE", ATA_UDMA5),
262 /* 6 */ DECLARE_NV_DEV("NFORCE2", ATA_UDMA6),
263 /* 7 */ DECLARE_NV_DEV("NFORCE2-U400R", ATA_UDMA6),
264 /* 8 */ DECLARE_NV_DEV("NFORCE2-U400R-SATA", ATA_UDMA6),
265 /* 9 */ DECLARE_NV_DEV("NFORCE3-150", ATA_UDMA6),
266 /* 10 */ DECLARE_NV_DEV("NFORCE3-250", ATA_UDMA6),
267 /* 11 */ DECLARE_NV_DEV("NFORCE3-250-SATA", ATA_UDMA6),
268 /* 12 */ DECLARE_NV_DEV("NFORCE3-250-SATA2", ATA_UDMA6),
269 /* 13 */ DECLARE_NV_DEV("NFORCE-CK804", ATA_UDMA6),
270 /* 14 */ DECLARE_NV_DEV("NFORCE-MCP04", ATA_UDMA6),
271 /* 15 */ DECLARE_NV_DEV("NFORCE-MCP51", ATA_UDMA6),
272 /* 16 */ DECLARE_NV_DEV("NFORCE-MCP55", ATA_UDMA6),
273 /* 17 */ DECLARE_NV_DEV("NFORCE-MCP61", ATA_UDMA6),
274 /* 18 */ DECLARE_NV_DEV("NFORCE-MCP65", ATA_UDMA6),
275 /* 19 */ DECLARE_NV_DEV("NFORCE-MCP67", ATA_UDMA6),
276 /* 20 */ DECLARE_NV_DEV("NFORCE-MCP73", ATA_UDMA6),
277 /* 21 */ DECLARE_NV_DEV("NFORCE-MCP77", ATA_UDMA6),
279 /* 22 */ DECLARE_AMD_DEV("AMD5536", ATA_SWDMA2, ATA_UDMA5),
282 static int __devinit amd74xx_probe(struct pci_dev *dev, const struct pci_device_id *id)
284 struct ide_port_info d;
285 u8 idx = id->driver_data;
287 d = amd74xx_chipsets[idx];
290 * Check for bad SWDMA and incorrectly wired Serenade mainboards.
293 if (dev->revision <= 7)
295 d.host_flags |= IDE_HFLAG_CLEAR_SIMPLEX;
296 } else if (idx == 4) {
297 if (dev->subsystem_vendor == PCI_VENDOR_ID_AMD &&
298 dev->subsystem_device == PCI_DEVICE_ID_AMD_SERENADE)
299 d.udma_mask = ATA_UDMA5;
302 printk(KERN_INFO "%s: %s (rev %02x) UDMA%s controller\n",
303 d.name, pci_name(dev), dev->revision,
304 amd_dma[fls(d.udma_mask) - 1]);
306 return ide_setup_pci_device(dev, &d);
309 static const struct pci_device_id amd74xx_pci_tbl[] = {
310 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_COBRA_7401), 0 },
311 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_VIPER_7409), 1 },
312 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_VIPER_7411), 2 },
313 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_OPUS_7441), 3 },
314 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_8111_IDE), 4 },
315 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_IDE), 5 },
316 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE), 6 },
317 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_IDE), 7 },
318 #ifdef CONFIG_BLK_DEV_IDE_SATA
319 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA), 8 },
321 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3_IDE), 9 },
322 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_IDE), 10 },
323 #ifdef CONFIG_BLK_DEV_IDE_SATA
324 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA), 11 },
325 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2), 12 },
327 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE), 13 },
328 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE), 14 },
329 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE), 15 },
330 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_IDE), 16 },
331 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_IDE), 17 },
332 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP65_IDE), 18 },
333 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP67_IDE), 19 },
334 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_IDE), 20 },
335 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP77_IDE), 21 },
336 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CS5536_IDE), 22 },
339 MODULE_DEVICE_TABLE(pci, amd74xx_pci_tbl);
341 static struct pci_driver driver = {
343 .id_table = amd74xx_pci_tbl,
344 .probe = amd74xx_probe,
347 static int __init amd74xx_ide_init(void)
349 return ide_pci_register_driver(&driver);
352 module_init(amd74xx_ide_init);
354 MODULE_AUTHOR("Vojtech Pavlik");
355 MODULE_DESCRIPTION("AMD PCI IDE driver");
356 MODULE_LICENSE("GPL");